What is written on the plaque of the ancient samurai gate?

There are many people who carve three characters on a plaque, such as "Xiang Zhen Di", "Geng Du Di", "He Kangju", "Living in peace" and "Harmony is precious". Four-character plaques are also common, such as "Fu Shou Kang Ning", "Coming to Zi Qi from the East" and "Managing the family diligently".