This is the 78th most frequent Japanese word.
小野田
"小野田" (Onoda) is a Japanese surname and place name.
In this sentence, '小野田' is used as a surname with the honorific 'さん' suffix, denoting respect towards the individual referred to.
小野田さんは今日も早く出勤しました。
Mr. Onoda went to work early again today.
'小野田' here acts as a possessive proper noun, referring to the owner of the company, identified by the following possession marker 'の'.
小野田の会社は駅の近くにあります。
Onoda's company is near the station.
The word '小野田' is used as the name of an entity, in this case, a restaurant, introduced by 'という' to identify the naming.