Bert - Bertie

Bert or Bertie is an informal shortening of a forename. The original from which it is shortened varies. Withycombe (1950) says: "The somewhat plebeian Bert is the usual diminutive of Albert... Bertie, on the other hand, is more often from Herbert or Bertram ...,but both may be used for any name ending in -bert, e.g. Cuthbert." Bert(ie) is a short form of the forename see above. There are two main types of such shortenings: they are convenient for writing, e.g. in lists; or they are essentially spoken pet-names, and thus informal. (See Conventional abbreviations for forenames.)

Short form	Long form	Informal or written	Other short forms	Remarks
Bert(ie)	see above	informal	---

There is a list of similar names at Conventional abbreviations for forenames, as well as the category:short names

Note that any informal form may be spelled in different ways. Notably, any spelling listed that ends in '-ie' may be written with the ending '-y', and vice versa.