The first letter of the crossed out name could be "K" especially when it you compare it to the "K" in "Kenya" in the line above. What looks like the top of a "T" could just as easily be part of the lines crossing out the name.
BHO had a wife named Kezia back in Kenya who was mother of his son Roy.
He may have started to write "Kezia Obama" and then changed his mind and wrote in Ann.
What-ever makes you happy...he also wrote home to his family in Kenya and told them he had married a woman named Anna Toot and was working for an oil company. We can’t remove the cross-out so your observation is a valid as any.
He may have written the name of the wife from whom he later explained he was separated, who was living in the Philippines.
I have looked closer a the scratched name in the 1964 doc. It definitely looks like Obama Senior started to write his Kenyan’s wife name. The first letter looks like a capital K for sure.
Other related item is just the date that the Obama Senior records were released - a few day AFTER the LFBC by the Boston Globe.
http://www.bluegrasspundit.com/2011/04/journalism-fail-boston-globe-reporter.html
Why then?