納得 and 一良好な usage in this sentence


What is the meaning of 「納得」 and 「一良好な」 in the following sentence?

> 仁の家族。仁の人柄がここで育ったのも納得のサムドラ内一良好な家族関係・人柄の一族。旧家で名家。

I think that 「一」 in this case is similar to 「一番」, so I would translate 「一良好な」
as "the best", "the favourite". As for 「納得」, I know it translates as
"consent", "agreement", "compliance", but I don't understand its meaning here.
The context is a character's family profile in a manga called "Samurai Drive"
(「サムライドライブ」, abbreviated to 「サムドラ」here). Here's my attempt:

> Jin's family. It's the family in which Jin developed his personality, and
> also the family with the best relationships and personalities within those
> agreed(?) in Samurai Drive.

Thanks for your help!




`～ + も/は + 納得だ/納得がいく/納得できる` means "(therefore) ～ seems
reasonable/legitimate/understandable", "so, that explains why ～", etc. `～` is
a consequence part, which is often undesirable and/or unlikely.

>   * 高級な素材を使っているので、値段が高いのは納得がいきます。
>   * このレストランの料理はとてもおいしい。なかなか予約が取れないのも納得だ。
>   * ここの家族の人柄は素晴らしいので、仁の人柄がここで育ったのも納得だ。
>

`納得の/納得がいく/納得できる + (noun)` is "(noun) that convinces someone of ～",
"reasonable (noun)", "satisfactory (noun)":

>   * 納得の値段 reasonable price
>   * 納得のいく説明 = 納得がいく説明 satisfactory explanation
>

Put together:

>   * なかなか予約が取れないのも納得のレストラン  
>  the restaurant that it is rightly/understandably hard to make a reservation
> at
>   * 仁の人柄がここで育ったのも納得の素晴らしい一族  
>  the wonderful tribe that convinces me of the fact that Jin's personality
> was developed here
>

* * *

`(place) + 一【いち】` means "best in (place)", "number one in (place)". Parse the
sentence as `サムドラ内一 + 良好`, not `サムドラ内 + 一良好`.

>   * 日本一【にほんいち】高い山 the highest mountain in Japan
>   * フランス一の葡萄畑 the greatest vineyard in France
>   * サムドラ(内)一良好な家族関係 the best family relationship in Samurai Drive
>

内 before 一 is not common.




`～ + も/は + 納得だ/納得がいく/納得できる` means "(therefore) ～ seems
reasonable/legitimate/understandable", "so, that explains why ～", etc. `～` is
a consequence part, which is often undesirable and/or unlikely.

>   * 高級な素材を使っているので、値段が高いのは納得がいきます。
>   * このレストランの料理はとてもおいしい。なかなか予約が取れないのも納得だ。
>   * ここの家族の人柄は素晴らしいので、仁の人柄がここで育ったのも納得だ。
>

`納得の/納得がいく/納得できる + (noun)` is "(noun) that convinces someone of ～",
"reasonable (noun)", "satisfactory (noun)":

>   * 納得の値段 reasonable price
>   * 納得のいく説明 = 納得がいく説明 satisfactory explanation
>

Put together:

>   * なかなか予約が取れないのも納得のレストラン  
>  the restaurant that it is rightly/understandably hard to make a reservation
> at
>   * 仁の人柄がここで育ったのも納得の素晴らしい一族  
>  the wonderful tribe that convinces me of the fact that Jin's personality
> was developed here
>

* * *

`(place) + 一【いち】` means "best in (place)", "number one in (place)". Parse the
sentence as `サムドラ内一 + 良好`, not `サムドラ内 + 一良好`.

>   * 日本一【にほんいち】高い山 the highest mountain in Japan
>   * フランス一の葡萄畑 the greatest vineyard in France
>   * サムドラ(内)一良好な家族関係 the best family relationship in Samurai Drive
>

内 before 一 is not common.

