mastodon.online is one of the many independent Mastodon servers you can use to participate in the fediverse.
A newer server operated by the Mastodon gGmbH non-profit

Server stats:

11K
active users

jdmccafferty

9 Jan 1639: Francis Harold nephew & biographer of Luke Wadding of starts his studies in St. Isidore's college

(2nd image here is some of his manuscript from
UCD Digital library)