Originally they were a part of my Mom's garden. I have no clue as what their names are or their cultivars. Got them for a few years now and always comes back vigorously every year. I prune them hard every winter. Very disease resistant. Just a few black spots (if any) towards the end of the season but nothing to be concerned of. They are literally traffic stoppers during the first flush of blooms. If deadheaded, they bloom non stop till frost. They flower in clusters so I think they're Grandefloras.
The blooms got strong scents, but the only disadvantage is - they don't last that long. Definitely not good as cut roses. They will only last about a day in a vase then you'll have a gazillion rose petals on your table top. Blooms are about 3-4" wide.

There's 4 of them. Here is bush #1: Buds starts out pinkish then matures to a pale light pink/ peach like color. Can grow to about 5-6' tall.

Blooms on bush #1 (Close-up):

Bush #2: Yellow blooms, grows to 5-6' tall.

Close-up of bush #2:

Bush #3: The shortest among the 4, probably will reach just about 4-5' tall. The first to bloom, and with the strongest fragrance. Medium pink.

A closer look of bush #3:

And bush #4: Another yellow, almost the same color and bloom shape as bush #2 but is the tallest and last to bloom.
It can grow well over 6' tall and often times will send out long, tall canes. Best candidate for pegging.
This picture is taken at the same time with the other 3 rose bushes, and as you can see it's full of buds but just a couple or so of blooms.

Here's a group shot of all 4 of them.

Another view.

Any information given will be highly appreciated as I really like these rose bushes to have names.

Thanks!

I'd guess the orange one to be Pat Austin. Maybe the yellow to be Golden Celebration? I'm not good with DAs...

Hi Skiekitty. Thanks for your input. Don't have any orange on those 4 rose bushes. The picture on bush #2 looks kind of orange but is actually yellow. So Pat Austin is out of the question. But you may be right on the Golden Celebration.
Maybe both bush #2 and #4 are the same variety. They have such a difference in height though. I'll do more research on Golden Celebration.

All the roses have cupped flowers and shrubby growth that suggests David Austin introductions.

It's hard to know for sure whether the yellow one is Golden Celebration or Graham Thomas. I've grown both, and my inclination is to say Graham Thomas because GT holds its roses face up as yours does, but GC tends to hold its flowers more face-out or downward. I think GT tends to be a little more prone to making clusters, and its flower petals are a little shorter. These factors suggest Graham Thomas for the yellow one. In hot places such as TX, it also does well pegged, I understand.

I'm a little less familiar with the pink roses of DA, but I would hazard a guess that #3 might very well be Mary Rose. It's about the right color and the shape of the flowers is about right, too.
#1 could be Sharifa Asma. The mix of pale yellow and pink pigment is suggestive of SA. And the slight ribbing in the leaves is as well.

Since these four roses were introduced at roughly the same point in history, there is a good chance that they were planted at the same time.

We have such a knowledgeable bunch of people here in our cubit. It's just wonderful. I agree that the two yellow ones probably are Graham Thomas and Golden Celebration and that the pink one probably is Mary Rose. It also looks like Kathryn Morley, but Mary Rose has always been more readily available than KM and it's also shorter, as your rose is. I think the first rose could be Sharifa Asma, but it looks more like Heritage to me.

It's nice to know that there are knowledgeable people in this forum. I did some research last night (or should I say - early morning) on DA's roses trying to match my rose bushes.

Bush #1 - my closest guess was 'Sweet Juliet' as sometimes depending on the weather or temperature, the blooms got more a hint of peach/apricot than light pink.
Steve and Zuzu, you guys might be right that it could be Sharifa Asma. Outer petals on the bloom do turn very light to almost white which is a trait of Sharifa Asma.

Bush #2 - I came up with Golden Celebration too.

Bush #3 - the pink one, you guys hit the spot. I posted this over at DG too and a gal there name Sue suggested that it is Mary Rose. I came up with another name. Upon further research on Mary Rose, I do believe it is indeed MR. Solved!

Bush #4 - I believe is Graham Thomas and is totally different than bush #2. It is a much taller rose bush with longer canes. And as what Steve mentioned, got shorter petals than bush #2 and a lot more buds per cluster and several clusters per stem/cane.

Thank you all!

Hey, Tex. The "gal named Sue" in DG is one of the owners of this cubit.

OMG! That is funny! Silly me, and didn't even realize. And it's right there on top of the page. Duh!

Thanks, Zuzu! And thanks to Sue also!

Yay!!! I'm so glad that they were all figured out!!!

LOL, I just started reading this thread and I was thinking, 'hey, didn't I just see these pictures? and didn't I post something about the pink one?!' and then I realized you posted them on DG!

Speaking of DA roses, I took this shot 2 days ago of my Mom's Graham Thomas. Sunshine on a stem!

Her Golden Celebration is quite big, probably 6 ft tall and as wide, with arching branches. Not in full bloom here, which is spectacular when it is in full flush!

wow, that's a beautiful rose. I planted a GC last year, it was a beautiful week of 70+ weather.. and then we had a freak cold snap & it went down to -15 that night. Lost almost every single one of the bareroots I'd put in. I just didn't get another GC after that. I'm tempted to get a William Shakespeare, though.. I've seen that rose grown here (Walmart parking lot, if you can believe that!) and it's a spectacular rose!