I can supply you with one excellent example actually, of a bow far earlier than the Mary Rose bows.
There's a longbow that was recovered in 1932 from an Irish crannog and in a tenth century context. It's 75 inches overall, and straight. It's called the Ballinderry Bow, and it's dimensions are almost identical to the average size of the Mary Rose bows. It's 1.6 inches wide, 1.25inches deep and made of yew, with sap and heartwood in proportion. These dimensions are the same (If perhaps slightly wider) as the typical Mary Rose warbow. It's half a millennium older than the Mary Rose bows, and yet essentially the same bow.
It's more well known as the Viking Bow, and as Hugh Soar writes in his book Secrets Of The English Warbow, "if this is truly typical of contemporary Viking weaponry, then the bows in use at Maldon in AD 991 are put into perspective, and doubt may be cast upon the belief that weapons of that period were inferior in draw weight to those of later times."
See what he says to that!
One thing to note - keep him away from anything written or said by Pip Bickerstaffe. I've had many conversations with Pip recently, and he is adamant that the warbows found on board the MR are much lighter in draw weight than they really are. His reasoning is based wholly on the fact that the nocks in the arrows are 1/8" wide, and yet he believes that no natural string (Hemp, linen) that's 1/8" thick could support a bow over 100lbs. However, in recent years many bowyers and stringfellows have made natural linen string 1/8" thick that have supported bows up to 170lbs, and done very well in terms of cast and longevity. Pip also believes that a bow of a draw weight 100lbs+ would break very quickly, or lose it's cast and thus be useless for battle. Again, this has been proven totally untrue by bowyers and warbow archers who are using massively heavy bows for many years with no detriment to their performance. The trouble is, he wrote all of this down in a very early book and with all the new evidence being discovered by people actually shooting the bows, his information is dated and wrong but he can't go back on his printed word so will stick to it stoicly despite it's untruth.