What does Alun mean?
Alun \a-lun\ as a boys' name is of Welsh origin. An ancient Welsh name, indirectly related to Alan, of which it is now generally taken to be the Welsh equivalent. It is borne by the character Alun of Dyfed in the "Mabinogi". It is also the name of a river and a regional name in Wales, sometimes called Alyn. Alun became popular after it was used as a bardic name by John Blackwell (19th century).
Alun has 24 related variations via Alan, Alyn: Ailean, Ailin, Al▼, Alain, Alair, Aland, Alann, Alano, Alanson, Alen, Alin, Allain, Allan▼, Allayne, Allen▼, Alley, Alleyn, Alleyne, Allie▼, Allin, Allon, Allyn, Alon and Alyn.
Alun is a rare first name for males and also a rare surname for both adults and children. (2000 U.S. Census)
Shown below is a comparison of the usage of the boy name Alun and related names. Prominent related forms of Alun (#unlisted) listed in the Top 1000 are Alan (#170 last year), Allen (#367), Allan (#720), Allyn, Allie and Al. Usage of these boy names reached its apex during 1940-1949 (usage of 0.568%) and is now much lower (usage 0.2905%, down 48.9%), with the versions Allan, Allen, Al and Allie becoming less stylish. Alan (#170) is the most contemporarily stylish birth name in this list. (2014 Birth Statistics)
Alun is alike in pronunciation to Aloin, Aluin, Alwin, Alwyn, Elan, Elon, Ilan, Ilon, Olen▼, Olin▼ and Olyn. Other recommended similar baby names are Alem, Aluf, Aluino and Arun. These names tend to be more commonly used than Alun.