I'm not sure if these patterns were named in honor of the Ivy League schools sharing the same name. In doing some research I was able to find patterns named after 4 of the original 6 colleges. I could not find a pattern for Princeton or Brown, And the Yale pattern is not sterling but silver plate. (Although, in all fairness, the silver plate of 1894 is very heavy and has much more sterling in its mix than plate of later years.) Durgin introduced their Dartmouth pattern in 1917.
Mount Vernon's Harvard pattern dates back to 1914.
Mount Vernon's Princeton pattern was introduced in 1915.
Yale is a silver plate pattern by International that dates back to 1894.
The Bread Knife is one of the largest pieces in any pattern. The serrated blade makes it easy to identify from other large knives, such as Roast Caving knives. However, there are a few patterns with Bread Knives that do not have serrated blades, such as Towle's TWS 350.