Quick note on Anglo-Saxon naming:
The mod currently appears to use -ing as shorthand for "Son Of." However from my reading on the language, this is not actually how the -ing ending was used. Anglo-Saxons actually had -sunnu (if I have the case right) and -dohtor, however these were VERY rarely used outside of those areas which fell under Danish influence in the later Saxon period. For the most part, individuals with the same name were differentiated by their home/place of origin (Penda is almost universally known as Penda of Mercia) or occupation, (as is the origin of modern surnames Cooper, Fletcher, Smith, etc.) and, somewhat less frequently, with a superlative/descriptive nickname (Æðelread Unræd).
The -ing ending was used instead to denote family/clan affiliation, much the same as Mac and O' for Scots and Irish today. The family name was taken from either the founder or another prominent member of that family. Using Penda as an example, the clan name was derived from his ancestor Icel, so he would most properly be known as Penda Iceling. His sons would ALSO use the "Iceling" name. Additionally only VERY prominent families were named in this way (I have seen the Icelingas of Mercia, Wuffingas of East Anglia, and the Stuffingas, among others, however no such names seem to exist for the ruling families of the Gewisse and Northumbrians). Additionally, Wódening was a popular surname among kings since many traced their ancestry directly to Wóden.
Finally, the royal titles of Cyning and Æþeling were used as SURNAMES. Penda of Mercia would be referred to as Penda Cyning, not Cyning Penda. The same applies to Æþeling (so, Wulhere Æþeling, rather than Æþeling Wulfhere). So Penda would instead be named: Penda Cyning Iceling instead of Cyning Penda Pybbing or whatever he's named currently in the game.